Add support for --ssl-no-revoke (jfrog#48)

* Add support for --ssl-no-revoke

* Update README.md

Update docs to new parameter COCOAPODS_ART_SSL_NO_REOVKE

* Update cocoapods_plugin.rb

Fix env name typo

* Update README.md

Fix typo in env name

README.md

@@ -33,6 +33,12 @@ If your .netrc file is not located in your home directory, you can specify its l
 export COCOAPODS_ART_NETRC_PATH=$HOME/myproject/.netrc
 ```
 
+You could set the following environment variable: COCOAPODS_ART_SSL_NO_REVOKE, this will add the flag --ssl-no-revoke to curl command.
+If your are running on an environment where access to CRL isn't available you would still be able to access Artifactory via HTTPS using the cocoapods-art plugin on windows.
+```
+set COCOAPODS_ART_SSL_NO_REVOKE=true
+```
+
 ## Artifactory Configuration
 See the [Artifactory User Guide](https://www.jfrog.com/confluence/display/RTF/CocoaPods+Repositories)
 

lib/cocoapods_plugin.rb

@@ -61,6 +61,9 @@ def download_file(full_filename)
         netrc_path = ENV["COCOAPODS_ART_NETRC_PATH"]
         parameters.concat(["--netrc-file", Pathname.new(netrc_path).expand_path]) if netrc_path
 
+        winssl_no_revoke = ENV["COCOAPODS_ART_SSL_NO_REVOKE"]
+        parameters.concat(["--ssl-no-revoke"]) if defined? winssl_no_revoke && "true".casecmp(winssl_no_revoke)
+
         headers.each do |h|
           parameters << '-H'
           parameters << h
@@ -145,4 +148,4 @@ def source_from_path(path)
 
         end
     end
-end
+end